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1 December 2009 A novel fiber optical tweezers with FZP structures on fiber end-face
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Proceedings Volume 7507, 2009 International Conference on Optical Instruments and Technology: Optical Trapping and Microscopic Imaging; 75070K (2009) https://doi.org/10.1117/12.837927
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China
Abstract
A novel fiber optical tweezers is proposed to trap subwavelength particles in 3-dimension, the Fresnel Zone Plate (FZP) structure is designed with a high numerical aperture (N.A.) and prepared on the flat fiber end face. According to the core area of 633nm single mode polarization-maintaining fibers, a FZP structure with three zones is designed. The transmitted field distribution is simulated by Finite-difference time-domain (FDTD) method, and the optical force on a 500 nm diameter polystyrene particle in water is calculated from Maxwell Stress Tensor (MST). The results indicate that the FZP structure can generate a subwavelength focal spot and the optical force can trap subwavelength particle in 3D. With focused ion beam (FIB) etching and depositing system, a fiber optical tweezers with the designed FZP structure is fabricated, which could be used widely due to its easy-operating and capability to manipulate subwavelength particles in 3D.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fenghuan Hao, Rui Wang, and Jia Wang "A novel fiber optical tweezers with FZP structures on fiber end-face", Proc. SPIE 7507, 2009 International Conference on Optical Instruments and Technology: Optical Trapping and Microscopic Imaging, 75070K (1 December 2009); https://doi.org/10.1117/12.837927
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